Lifespan: 1/1 of Tenshō 4 (1576) to 6/16 of Kanei 10 (1633)
Other Names: Sentsurumaru (childhood)
Father: Chiba Kunitane
Mother: Daughter of Iwamatsu Morizumi
Chiba Shigetane served as a bushō during the Sengoku period. He was the thirty-first head of the Chiba clan.
In 1583, Shigetane was born as the son of Chiba Kunitane, the twenty-ninth head of the clan. There are alternative theories regarding the year of Shigetane’s birth.
In 1585, after his father, Kunitane, was killed at the hands of a retainer, the headship of the Chiba clan was inherited by Chiba Naoshige, the son of Hōjō Ujimasa. A young Sentsurumaru (later, Shigetane) and his mother were sent as hostages of the Gohōjō to reside in Odawara. The timing is uncertain, but, later, he received one of the characters from the name of Chiba Naoshige and adopted the name of Shigetane, appearing to have inherited the clan.
In 1590, after the decimation of the Gohōjō clan, the Chiba were regarded as affiliates of the Gohōjō, whereupon their landholdings were seized. Thereafter, Shigetane became a rōnin, or wandering samurai. He obtained land from the Edo bakufu owing to a connection through his mother who had earlier served Sūgenin, the wife of Tokugawa Hidetada, the second shōgun of the Edo bakufu. Before long, however, he relinquished the land and continued life as a rōnin. In 1633, he was said to have died in Edo at the age of fifty-eight.